APA

Porter W. L., . (1949). Mathematics for investment. New York: Prentice-Hall.

Chicago

Porter Walter Lee, . 1949. Mathematics for investment. New York: Prentice-Hall.

Harvard

Porter W. L., . (1949). Mathematics for investment. New York: Prentice-Hall.

MLA

Porter Walter Lee, . Mathematics for investment. New York: Prentice-Hall. 1949.